//
//  MainTabBar.swift
//  新浪微播
//
//  Created by lxw on 15/12/14.
//  Copyright © 2015年 lxw. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {
    override init(frame: CGRect) {
       super.init(frame: frame)
        addSubview(composeBtn)
    }

    required init?(coder aDecoder: NSCoder) {
       // fatalError("init(coder:) has not been implemented")
        super.init(coder:aDecoder)
        addSubview(composeBtn)
    }
   //设置所有子视图的frame
    override func layoutSubviews() {
        super.layoutSubviews() 
        let w = self.bounds.width / 5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        var index: CGFloat = 0
        for subView in subviews
        {
            if subView.isKindOfClass(NSClassFromString("UITabBarButton")!) {
                subView.frame=CGRectOffset(rect,index*w,0)
                index += (index == 1 ? 2 : 1)
            }
        }
        composeBtn.frame = CGRectOffset(rect, 2 * w, 0)
       // bringSubviewToFront(composeBtn)
    }
    
    lazy var composeBtn: UIButton = {
      let btn = UIButton()
       btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
       btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        btn.sizeToFit()
        return btn
        
    }()
}
